Need help in GeoServer Performace Testing using Jmeter

Question

I am using GeoServer 2.18 on my side & wanted to do performance testing.

Objective :

• I am using J meter for performance testing.
• My goal is to test a particular WFS service having basic parameters such as 'GetFeature','service', 'version','outputformat'.
• When I access my WFS url in web browser it downloads data in csv format as per url.
• While in J meter, it shows an exception for certain requests.

Details :

• URL : https://localhost:8080/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typeName=workspace:layer&outputFormat=csv

My questions :

• Any idea why it's showing an exception ?
• If I change an output format as 'fff' then why it shows response code as '200'(OK)?
• Any document available for response code ?

Answer 1

• Any idea why it's showing an exception ? - it's server-side error, check your application logs for the reason. From JMeter side you can troubleshoot the issue by adding the next line to system.properties file:

   javax.net.debug=all
  

  and the following lines to log4j2.xml file:

  <Logger name="org.apache.http" level="debug" />
  <Logger name="org.apache.http.wire" level="debug" />
  

  JMeter restart will be required to pick up the change

• with regards to response too large to be displayed - View Results Tree listener limits the maximum response size, to disable this limitation add the next line to user.properties file:

   view.results.tree.max_size=0
  

• If I change an output format as 'fff' then why it shows response code as '200'(OK)? - again, this is how your server is set up, JMeter automatically treats HTTP Status Codes below 400 as successful, if you want to check the response for errors you will need to add i.e. Response Assertion